The compressor is the literal heart of a central air conditioning system: it’s what causes refrigerant to move through the rest of the system and transfer heat from the inside to the outside. When a compressor fails, the AC fails. The fans may still run, but no cool air will come from the vents.
Because the compressor is such a vital component, and an expensive one to replace, a homeowner must face a big choice about what to do next.

Homes across the US frequently have issues with indoor air quality. Because modern houses are designed to prevent loss or gain of heat through open areas, there’s little chance for fresh air circulation to clean out the concentration of indoor contaminants.